Mechanic question..help

PynkEye

New Member
Mar 30, 2005
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Hi, my bro has a 91 Cavalier.
One day he woke up and the car was dead, so he got it boosted and the tow guy said to change the batterie so he did. Next day its ok, day after its dead again...but as soon as its boosted up...he can run all he want, and starts when he wants...only time it dosnt start...is if its left overnight or during 9h work ..but its not all the time..last week it started 5 days in a row..now this week end died again..so we changed the alternator...and same problem. We cleaned up the grounds and shit..that werent dirty at all.

Anyone have any idea ??? once u change battery and alternator...wtf could it be ?? something sucking juice ...but what ???
 

PynkEye

New Member
Mar 30, 2005
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ya those can stay on 24h no prob....ive forgoten mine when I went in Raves....and no probs startting up
 

robbo185

New Member
Apr 6, 2005
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Chicago
my bonneville did the same thing....turns out the power attena motor didnt shut off and the light switch for the lights was bad. Check every little thing you can think of
 

PynkEye

New Member
Mar 30, 2005
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damn how did you find that problem...do you plug in a multimeter and check if any amparage is getting drawn ??? how the hell do u find the problem lol....dont u use a test light on the fuses or soemething ???? Mecaniks help me pls lol
 

GrimJack

Administrator
Dec 31, 1969
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idriders.com
This is really tough to diagnose. Basically, there is either a short in the wiring somewhere, or some accessory is not turning off.

You normally diagnose this by hooking up an amp meter to the battery, record how much power is being drained, then pull the fuses one by one until you find the one that drops the power drain by a lot. That circuit is your culprit.